TY - JOUR T1 - Density Functional Theory (DFT) approach for kinetic and thermodynamic study of reaction mechanism of copper (II) complex from 2-hydrazinyl-4,5-dihydro-1h-imidazole and anthracene-9-carbaldehyde AU - Elıjah, Shola PY - 2020 DA - February Y2 - 2019 DO - 10.18596/jotcsa.527827 JF - Journal of the Turkish Chemical Society Section A: Chemistry JO - JOTCSA PB - Turkish Chemical Society WT - DergiPark SN - 2149-0120 SP - 77 EP - 86 VL - 7 IS - 1 LA - en AB - Abstract: A computational approach was employed to study the reactionmechanism for the copper (II) complex from 2-hydrazinyl-4,5-dihydro-1H-imidazoleand anthracene-9-carbaldehyde at DFT (B3LYP) theory level. The reactionmechanism was proposed and found to have five elementary steps which involveintermediate elementary step and three transition state. The reactionmechanisms are observed to have bimolecular and unimolecular steps which giverise to two-step reaction pathway. The bimolecular step appeared to be ratedetermining step with highest energy barrier (2925.75kJ/mol) at the thirdtransition state (TS3). The geometrical variations in bond length of theintermediate and the transition states during the course of the reaction wasalso studies which signified that transformation has occurred from the initialstate to final state of product formation. The rate equation and general ratelaw for the reaction pathways were also established. The kinetics study showsthat the reaction mechanism for the formation of copper (II) complex followspseudo-first order and second order reaction with high correlation while thethermodynamic study indicates that the overall reaction is non-spontaneous andendothermic. KW - Keywords: Bimolecular KW - Copper (II) complex KW - kinetic KW - Transition state CR - 1. Kostova I, Saso L. Advances in research of Schiff-base metal complexes as potent antioxidants. Curr Med Chem. 2013; 20(36): 4609–32. CR - 2. Sztanke K, Maziarka A, Osinka A, Sztanke M. An insight into synthetic Schiff bases revealing antiproliferative activities in vitro. Bioorg Med Chem. 2013; 21(13): 3648–66. CR - 3. Maheswari PU, Roy S, den Dulk H, Barends S, van Wezel G, Kozlevcar B, et al. The square-planar cytotoxic [CuII (pyrimol) Cl] complex acts as an efficient DNA cleaver without reductant. J Am Chem Soc. 2006; 128(3): 710–11. CR - 4. Qiao X, Ma Z-Y, Xie C-Z, Xue F, Zhang Y-W, Xu J-Y, et al. Study on potential antitumor mechanism of a novel Schiff Base copper(II) complex: synthesis, crystal structure, DNA binding, cytotoxicity and apoptosis induction activity. J Inorg Biochem. 2011; 105(5): 728–37. CR - 5. Qin Q-P, Liu Y-C, Wang H-L, Qin J-L, Cheng F-J, Tang S-F, et al. Synthesis and antitumor mechanisms of a copper(II) complex of anthracene-9-imidazoline hydrazone (9-AIH). Metallomics. 2015; 7(7): 1124–36. CR - 6. Ambundo EA, Deydier M-V, Ochrymowycz L, Rorabacher D. Kinetics and mechanism of copper(II) complex formation with tripodal aminopolythiaether and aminopolypyridyl ligands in aqueous solution. Inorg Chem. 2000; 39(6): 1171–79. CR - 7. Jasiński R, Jasińska E, Dresler E. A DFT computational study of the molecular mechanism of [3+ 2] cycloaddition reactions between nitroethene and benzonitrile N-oxides. J Mol Model. 2017; 23(1): 13. CR - 8. Siaka A, Adamu U, Sulaiman I, Hamza A, others. Density functional theory (B3LYP/6-311+ G**) study of some semicarbazones formation mechanism. Orient J Chem. 2015; 31(4): 1985–97. CR - 9. Siakaa A, Uzairub A, Idrisb S, Abbaa H. DFT (B3LYP) computational study on the mechanisms of formation of some semicarbazones. Chem J Mold Gen. 2016; 11(1): 74–85. CR - 10. Adeniji SE, Uba S, Uzairu A. A Novel QSAR Model for the Evaluation and Prediction of (E)-N’-Benzylideneisonicotinohydrazide Derivatives as the Potent Anti-mycobacterium Tuberculosis Antibodies Using Genetic Function Approach. Phys Chem Res. 2018; 6(3): 479–92. UR - https://doi.org/10.18596/jotcsa.527827 L1 - https://dergipark.org.tr/en/download/article-file/857338 ER -